This article is stated how to acquire the heating data in power frequency current 6 300 A of aluminum frame of vacuum generator CBs by building-up of 3D-modle of this frame

and which is calculated by finite element simulation computation.On the basis of the above method

the sample machine has been made

and the temperature rise test has been carried out under rated current 6 300 A.Through the calculation data and test data contrast

the feasibility of the design scheme is verified.